diff options
| -rw-r--r-- | contrib/flex/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/flex/main.c b/contrib/flex/main.c index 43960da5a4c6..173e4d6cdf94 100644 --- a/contrib/flex/main.c +++ b/contrib/flex/main.c @@ -364,7 +364,7 @@ void check_options () output_chain = filter_create_int(NULL, filter_tee_header, headerfilename); if ( !(m4 = getenv("M4"))) m4 = M4; - filter_create_ext(output_chain, m4, "-P", 0); + filter_create_ext(output_chain, m4, "-gP", 0); filter_create_int(output_chain, filter_fix_linedirs, NULL); /* For debugging, only run the requested number of filters. */ |